1 /*

     2 * Copyright (c) 2002-2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *  MVRUpdateEventProvider provides an interface for registering

    16 *  and unregistering several MVRObserver derived observers

    17 *

    18 */

    19 

    20 

    21 #ifndef __MVRUPDATEEVENTPROVIDER_H

    22 #define __MVRUPDATEEVENTPROVIDER_H

    23 

    24 // INCLUDES

    25 #include <e32def.h>

    26 

    27 #include "MVRObserver.h"

    28 

    29 // CLASS DECLARATION

    30 

    31 /**

    32 *  MVRUpdateEventProvider provides an interface for registering

    33 *  and unregistering several MVRObserver derived observers

    34 *

    35 */

    36 class MVRUpdateEventProvider

    37     {

    38     public:

    39 		/**

    40 		* Registers an observer for receiving update notifications.

    41 		* @param aObserver The observer object.

    42 		*/    

    43 		virtual void RegisterObserver( MVRObserver* aObserver ) = 0;

    44 		

    45 		/**

    46 		* Unregisters a previously registered observer

    47 		* @param aObserver The observer object.

    48 		*/		

    49 		virtual void UnregisterObserver( MVRObserver* aObserver ) = 0;

    50 	};

    51 

    52 #endif      // __MVRUPDATEEVENTPROVIDER_H

    53 

    54 // End of File